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Old 7th Nov 2020, 11:34 am   #22
ORAWA01
Hexode
 
Join Date: Apr 2011
Location: Stirlingshire, UK.
Posts: 407
Default Re: Advice on the LOW PASS Filters

Quote:
Originally Posted by G6Tanuki View Post

Have you considered a simple un-amplified ferrite-rod antenna tuned to the band-in-question? It'll give you some good directivity at least, and will probably deliver all the wanted-signal you need.
Great points, Tanuki.

I was thinking because the signals I have been trying to copy were all very weak due to the distance and their low power TXing often less than 1kW, I would need more gain from the amplified device. But it has the horrendous drawbacks, which are cross modulation and overloading.

And I was not aware of the fact that those powerful MW transmitters were not too far away from me. It does not help the situation.

I used to read about the tuned ferrite rod antennas with strong directivity and high Qs, but mostly they seem for MW and LW bands. Would it work well for on SW in DXing too? If they do, I would love to try it out of course.
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